Ozone apparatus



1957 H. TRUB 2,778,795

OZONE APPARATUS Filed March 13, 1955 INVEI\ I TOR. 6444 4 50 7/?05 BY I I,

United States Patent OZONE APPARATUS Hannes Triib, Zurich, Switzerland Application March 13, 1953, Serial No. 342,194

Claims priority, application Switzerland March 15, 1952 3 Claims. (Cl. 204-317) The present invention concerns an ozone apparatus which has as its characteristic feature an annular casing with an ozone element with a transformer on one side and a potentiometer connected in senies with a fixed resistance to the supply voltage on the other side, arranged in such a way that the high voltage can be adjusted on the transformer secondary.

The attached drawing shows a diagrammatic example of a machine constructed in accordance with the present invention.

In this drawing, 1 denotes a horizontal annular casing, with a concentric bottom 2, fixed by several radial arms 3 to the annular casing 1, whereby a first annular channel is defined between said casing and said base. The bottom 2 is shaped like a vessel and serves to locate the base 4 of an ozone element 5. The base 4 is fixed to the bottom 2 by means of detachable fastenings, e. g. screws, and supports a transformer 8 with a low-voltage winding 6 and a high-voltage winding 7. A glass dome 10, having a cylindrical wall portion and coated inside with a layer of metal 9, covers the transformer 8 and is held in the base 4 by means of a sealing substance or member 11. On the outside of the glass dome 10 a wire mesh 12 fits tightly over the cylindrical part of the dome. This arrangement guarantees an eifective protection of the transformer 8 against corrosion by the ozone.

The low-voltage winding 6 is connected to two supply leads 13, 14 through a potentiometer 15 (connected across the two supply leads).

A fixed resistance 16 is connected in series with the potentiometer. A fuse 17 protects the low voltage circuit. The high-voltage winding 7 has one terminal electrically connected to a split spring ring 18, which is located against the inner wall of the glass dome 10, and another terminal connected through a conductor 19, which extends through the base 4 and round it, to the wire mesh 12.

The production of ozone is based on the effect of electrical discharges between the external wall of the glass dome 10 and the wire mesh 12 on the oxygen of the air. It is, however, important that this ozone is removed as quickly as possible by the air which flows towards the points where the discharge takes place, as otherwise a decomposition of the ozone might take place. In the present case a flow of air is induced by putting a rela-' tively high load on the potentiometer 15 and the resistance 16. Without this draught the ozone, which is heavier than air, would not be removed quickly enough from the effects of the ozone element, and sink slowly towards the bottom of the apparatus, instead of escaping through a hood 20 which is fixed to the annular casing 1 by detachable fastenings and provides a second annular channel between the hood and the dome 10. This draught of air also prevents the corrosion of the circuit elements which are located below the ozone element in a cylindrical main base 21, fixed to the annular casing 1 in such a way that it can be detached, and of the main base on which the apparatus is assembled.

2,778,795 Patented Jan. 22, 1957 Also, the ozone element does not get dirty so quickly, as the air moving away upwards prevents the deposition of dirt to a considerable extent.

The apparatus according to the present invention guarantees a satisfactory output of ozone at a small current consumption.

While the invention has been described in detail with respect to a now preferred example and embodiment of the invention it will be understood by those skilled in the art after understanding the invention, that various changes and modifications may be made without departing from the spirit and scope of the invention and it is intended, therefore, to cover all such changes and modifications in the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent, is:

1. An ozone producing apparatus comprising an annular casing, a horizontal supporting base located inteniorly of said casing and arranged substantially concentrically with the latter, radial arm members interconnecting said base, and said casing and retaining the same in spaced relation with respect to one another to provide a first annular channel between said casing and said base, said first channel thereby constituting a first flow path for air from which ozone is to be produced, a sealed glass dome having a cylindrical wall portion and supported on said base, said wall portion being arranged substantially concentriically with said base, a first cylindrical electrode disposed within said dome and substantially concentrically with said cylindrical wall portion thereof, a second cylindrical electrode'surrounding said cylindrical wall portion of said dome and arranged in concentric relation therewith, a transformer disposed on said base and within said dome, said transformer having a low-voltage primary winding and a high-voltage secondary winding, said secondary winding being electrically connected across said first and second electrodes, electric circuit means connected to said primary winding for applying low voltages to the latter, a hood having an open top and an open bottom and supported by said radial arm members within said casing, said hood being spaced from and surrounding said second electrode and being arranged substantially concentrically with the latter and with said cylindrical wall portion of said dome to thereby provide a second annular channel communicating with said first annular channel and constituting a second flow path for said air during production of said ozone therefrom, and an electric resistance element constituting a part of said electric circuit means and supported by said base in said first path of fiow, whereby said resistance element controls the voltages applied to said primary winding and additionally heats said air prior to arrival thereof at said second electrode in said second channel, whereby said air and said ozone produced therefrom will rise by convection through said second annular channel for exhaust through said open top of said hood.

2. An apparatus according to claim 1, further comprising a potentiometer constituting part of said electric circuit means and connected in series with said resistance element and with said primary winding of said transformer, to thereby facilitate control of potentials applied to said primary winding as well as of the electric current flowing through and heat generated by said resistance element.

3. An apparatus according to claim 1, saiid first electrode comprising a coating of electrically conductive material arranged on the inner surface of said cylindrical wall portion of said dome, said second electrode comprising a wire mesh embracing the outer surface of said cylindrical wall portion of said dome.

(References on following page) Refernces Cited in the file of this patent 1 UNITED STATES PATENTS 1,024,533 Stuart Apr. 30, 1912 1,125,900 Darling 1911.19, 1915 255,764 1,505,751 Todd Aug. 19, 1924 7 2 Hartman Mar. 23, 1926 Davis June 21, 1932 FOREIGN PATENTS Great Britain July 29, 1926 Great Britain Feb. 10, 1930 

1. AN OZONE PRODUCING APPARATUS COMPRISING AN ANNULAR CASING, A HORIZONTAL SUPPORTING BASE LOCATED INTERIORLY OF SAID CASING AND ARRANGED SUBSTANTIALLY CONCENTRICALLY WITH THE LATTER, RADIAL ARM MEMBERS INTERCONNECTING SAID BASE, AND SAID CASING AND RETAINING THE SAME IN SPACED RELATION WITH RESPECT TO ONE ANOTHER TO PROVIDE A FIRST ANNULAR CHANNEL BETWEEN SAID CASING AND SAID BASE, SAID FIRST CHANNEL THEREBY CONSTITUTING A FIRST FLOW PATH FOR AIR FROM WHICH OZONE IS TO BE PRODUCED, A SEALED GLASS DOME HAVING A CYLINDRICAL WALL PORTION AND SUPPORTED ON SAID BASE, SAID WALL PORTION BEING ARRANGED SUBSTANTIALLY CONCENTRICALLY WITH SAID BASE, A FIRST CYLINDRICAL ELECTRODE DISPOSED WITHIN SAID DOME AND SUBSTANTIALLY CONCENTRICALLY WITH SAID CYLINDRICAL WALL PORTION THEREOF, A SECOND CYLINDRICAL ELECTRODE SURROUNDING SAID CYLINDRICAL WALL PORTION OF SAID DOME AND ARRANGED IN CONCENTRIC RELATION THEREWITH, A TRANSFORMER DISPOSED ON SAID BASE AND WITHIN SAID DOME, SAID TRANSFORMER HAVING A LOW-VOLTAGE PRIMARY WINDING AND A HIGH-VOLTAGE SECONDARY WINDING, SAID SECONDARY WINDING BEING ELECTRICALLY CONNECTED ACROSS SAID FIRST AND SECOND ELECTRODES, ELECTRIC CIRCUIT MEANS CONNECTED TO SAID PRIMARY WINDING FOR APPLYING LOW VOLTAGES TO THE LATTER, A HOOD HAVING AN OPEN TOP AND AN OPEN BOTTOM AND SUPPORTED BY SAID RADIAL ARM MEMBERS WITHIN SAID CASING, SAID HOOD BEING SPACED FROM THE SURROUNDING SAID SECOND ELECTRODE AND BEING ARRANGED SUBSTANTIALLY CONCENTRICALLY WITH THE LATTER AND WITH SAID CYLINDRICAL WALL PORTION OF SAID DOME TO THEREBY PROVIDE A SECOND ANNULAR CHANNEL COMMUNICATING WITH SAID FIRST ANNULAR CHANNEL AND CONSTITUTING A SECOND FLOW PATH FOR SAID AIR DURING PRODUCTION OF SAID OZONE THEREFROM, AND AN ELECTRIC RESISTANCE ELEMENT CONSTITUTING A PART OF SAID ELECTRIC CIRCUIT MEANS AND SUPPORTED BY SAID BASE IN SAID FIRST PATH OF FLOW, WHEREBY SAID RESISTANCE ELEMENT CONTROLS THE VOLTAGES APPLIED TO SAID PRIMARY WINDING AND ADDITIONALLY HEATS SAID AIR PRIOR TO ARRIVAL THEREOF OF SAID SECOND ELECTRODE IN SAID SECOND CHANNEL, WHEREBY SAID AIR AND SAID OZONE PROUDCT THEREFROM WILL RISE BY CONVECTION THROUGH SAID SECOND ANNULAR CHANNEL FOR EXHAUST THROUGH SAID OPEN TOP OF SAID HOOD. 